Features: 1. Reduce Power Consumption: Since our business wireless headset uses 10mm/0.4-inch graphene drivers, it can improve speech intelligibility and reduce power consumption. 2. Unique and Stylish Appearance: With the design of unique and stylish appearance, our wireless hands-free headset is suitable for your work environment. 3. Convenient for You: Thanks to the design of the LED display power indicator, our business single headset allows you to see the power usage of the headset at a glance. Don't worry about suddenly running out of power. 4. Enjoy Hands-Free Wireless Calling: Our in-ear headset has buttons at your fingertips so you can enjoy true hands-free wireless calling. 5.After-service: If you have any questions after receiving the product, please feel free to contact us and we will provide you with a satisfactory answer. Specification: Bluetooth-compatibleversion: V5.3 Battery: 90 mah Charging Time: 1-2 hours Listening and Talking Time: 12 hours Frequency: 20Hz-20KHz Impedance: 32 ohms Sensitivity: 85dB/mW Waterproof Rating: IPX5